Philips AED batteries come with Philips 4 Year Warranty and 200 + shock capacity.
Philips AED Battery for Onsite/HS1/ FRx units
The HeartStart Defibrillator replacement battery is a long-life battery just like your original battery, with Philips 4 year warranty and 200+ shock capacity.
A spare battery should be stored with the defibrillator. Additional batteries should be purchased for defibrillators used frequently for training or demonstrations. This battery is also compatible with HeartStart OnSite/HS1 Defibrillators.